/*
 * Copyright 2006 Brian Cavalier
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.bc.iterate.examples;

import static org.bc.iterate.Iterate.*;

import java.io.FileInputStream;
import java.io.InputStream;

public class GrepExample {
	public static void main(String[] args) {
		if(args.length == 0) {
			System.err.println("Usage: GrepExample pattern [file]");
			System.exit(1);
		}

		System.out.println("Args: " + join(args, ", "));
		
		try {
			InputStream in = (args.length < 2) ? System.in : new FileInputStream(args[1]);
			each(stream(in), grep(args[0]), println());
		}
		catch (Exception e) { 
			System.err.println(e);
		}
	}
}